Truck



(No Model.)

2 Sheets-Sheet 1. J. R. WALKER.

TRUCK. I

Patented June 16, 1885.

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2 SheetsSheet 2.,

(N0 Mode L) .J. R. WALKER.

TRUCK.

No. 320,418. Patented June 16, 1885.

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UNITED STATES PATENT OFFICE.

JOHN R. IVALKER, OF HIGHLAND, MISSOURI.

TRUCK.

SPECIFICATION forming part of Letters Patent No. 320,418, dated June 16, 1885.

Application filed April 22, 1885. (N0 model.)

To all whom it may concern Be it known that I, JOHN R. \VALKER, av citizen of the United States, and a resident of Richland, in the county of Pulaski and State of Missouri, have invented certain new and useful Improvements in Hoisting-Trucks and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, which form a part of this specification, and in which Figure 1 is a perspective view of my improved hoisting-truck. Fig. 2 is a longitudinal vertical sectional view of the same. Fig. 3 is a transverse vertical sectional view taken on the line no 00 in Fig. 2, and Fig. 4 is a bottom view.

The same letters refer to the same parts in all the figures.

This invention relates to trucks forthe transportation of baggage and other articles of whatsoever kind, and it has for its object to provide trucks of this kind with a hoisting or elevating apparatus, for the purpose of ele vating the load to the truck to or about the level at which it is to be discharged.

The invention consists in the impi oved eon- S.ruction and arrangement of parts, which will be hereinafter fully described, and particularly pointed out in the claims. 1

In the drawings hereto annexed, A designates the frame of the truck, which is mounted upon an axle, B, having transportingwheels 0 O. The front and rear ends of the sides of the truck-frame are provided with uprights 0 G, at the upper ends of which are journaled pulleys D D, over which pass cords or ropes E E, the inner ends of which are attached to the corners of the elevating-platform I, which is arranged to slide vertically between the said uprights, and the outer ends of which, after passing over suitable guidepulleys, Gr, upon the under side of the truckframe, are attached to a shaft, H, journaled transversely under the latter, and which may be revolved so as to wind the ropes E E thereon, and thus lift or elevate the truck-platform. Each end of the shaft H is provided with a pair of ratchet-wheels, I J, the inner ones of which, I, are engaged by check pawls or dogs,

K K, pivoted to the sides of the truck-frame, and held in contact with the said ratchetwheels by means of suitably-arranged springs L L. The inner ends of the said pawls are connected with arms M M at the ends of a rock-shaft, N, arranged transversely under the truck-frame, and the central portion of which has a crank, 0, connected with the inner end of a lever, P, which is pivoted under the truckframe near the front end of the same. By depressing the outer end of the said lever the crank 0 will be raised, thereby turning the shaft N and throwing the dogs K K out of engagement with the ratchet-wheels I I, and at the same time the lever P is caused to bear, with any desired degree of pressure, upon the periphery of the shaft H, thereby forming a brake, by which the descent of the elevating-platform F of the truck is governed. Upon the ends of the shaft H are pivoted a pair of levers, Q Q, having longitudinal perforations or sockets R It, in which are seated sliding pawls S S, adapted to engage the ratchet wheels J J upon the shaft H, and provided with operating-rods T T, having arms U U, extending laterally through slots V V in the sides of the levers Q. The latter are pro vided with hooks W, which may be made to engage the arms U, so as to hold the pawls S S raised and out of engagement with the ratchetwheels J. The front end of the truck frame is provided on its under side with swiveled casters X X, and it has a pair of hinged 0r pivoted arms, Y Y, connected by ahandle-bar, Z, and equipped with hooks A, for the purpose of supporting the levers Q when not in use.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. The truck, having a pivoted handle-frame, occupies but little space, and it may be readily and conveniently used in the same manner as any ordinary truck. When it is desired to elevate the load which has been placed upon the platform of the truck, this may be readily accomplished by operating either one or-both of the levers Q, when the platform is easily raised to any desired height. In order to lower the plat form it is only necessary to depress the front end of the lever P, whereby the stop-pawls are thrown out of engagement with the ratchet-wheels I I. At the same time the lever P serves as a brake to check the descent of the platform in case the latter should be loaded. The construction of the device is simple and inexpensive, and it is convenient and easily manipulated.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In an elevatingtruck, the combination, with a transverse shaft for operating the same, and having a pawl and ratchet-Wheel at each side of the truck, of a rock-shaft having arms connected with the said pawls and adapted to throw them out of action, and a foot-lever for operating said rockshaft and adapted to act as a brake at the same time that it causes and for the purpose set forth,

2. In an elevating-truck, the combination, with the ratchetwheels for operating said mechanism, of a hollow slotted handle, a rod passing through said handle, the lower end of which engages with the ratchet-wheel, and the upper end is bent at an angle and projects through said slot, and a hook for engaging with the said bent portion and keeping the lower part from engaging with the said pawl, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

JOHN R. WALKER. 

